Insulating-washer



H. VOSSLER. INSULATING WASHER. APPLICATION man ms. 13. 1911.

1,8 1 4, 1 03. Patented Aug. 20, 1919.

UNITED STATES PATENT OFFICE.

HENRY VOS SLEB, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE HART & HEGEMAN MANUFACTURING COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

INSULATING-WASHER Application filed February 1331917.

To all whom it may concern Be it known that I, HENRY Vossnrm, a subject of the ruler of Germany, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Insulating-Washers, of which the following'is a specification.

This invention relates to insulatingwashers. An insulating-washer involving the invention, is susceptible of advantageous use in widely-different electrical connections. For instance one or more of them can with utility, be incorporated in an electric-switch, which as will be understood is merely one of several illustrations. The primary object of the invention is the provision of an article of the character noted which possesses the advantages of a compound washer, yet which is made in a single piece. This particular condition may be obtained in various ways.

In the drawings accompanying and forming part of the present specification I have shown in detail several of the many different forms of embodiment of the invention whichIwill set forth fully in the following description. I am in no sense restricted to this particular disclosure; I may depart therefrom in several respects within the scope of the invention defined by the claims following said description.

Referring to said drawings:

Figure 1 is a sectional view of a switch provided with an insulating-washer involving the invention.

Fig. 2 is a view in elevation of the central portion of the switch.

Fig. 3 is a longitudinal section on the line 3-3 of Fig. 2, looking in the direction of the arrow. i

Fig. 1 is a longitudinal central sectional view of one end of the Washer shown in Figs. 1, 2 and 3.

Figs. 5 and 6 are like views of different forms of washers.

;Fig. 7 is a view practically like Fig. 4 but with the projection plain or unslotted.

Like characters refer to like parts throughout the several views.

In Fig. 1 I have shown in section, an oscillating snap-switch which as to certain of its parts will be briefly set forth. As may be inferred from the observations Specification of Letters Patent.

Patented Aug. 26, 1919. Serial No. 148,405.

already made, a washer involving the invention can be utilized with advantage when incorporated in such an article, although as may be inferred from what. I have already noted, it can be used with equal advantage in other devices in the electrical art. In this figure, the numeral 2 denotes an insulating support which as shown is hollow. 3 designates the oscillating portion of the snapswitch provided with the switching-members or pole-pieces 4 and 5. These pole pieces 4 and 5 are generally made of sheet metal and they fit flatwise against each other and are disposed between the insulating washers 6, a part of one of which is shown in detail in Fig. 4. These insulating washers are of suitable material such as vul canized fiber, and they receive fiatwise between them the two pole pieces 4 and 5 which are contiguous to each other as shown best-in Fig. 3. Through the washers (3 as will hereinafterappear the projections 7 of the body extend, these projections in the present instance being integral with the body 3 which is abutted by the plate 8 through slots 9 in which the projections 7 extend. The inner of the two washers (3, it will be seen, fits flatwise against the metal washer or plate 8, the outer of said insulating washers (5 receiving flatwise the metal washer or strip 10 slotted as at 11 to receive the two fiat projections 7 which as shown are headed as at 12 over the outer surface of the outer washer 10, the two outside plates 8 and 10, the insulating washer 6 and the switching members 1 and 5 being clamped solidly in position by heading over the projections 7 1n the manner set forth.

Although each washer 6 is slotted, and although each in turn receives two projections, this may not always be necessary as \vil hereinafter appear. The washers 6 are pressed out as at 13. As a result of this pressing out of the washers there are produced exterior thereof bulges or projections as 14. The pockets or depressions 13 and the external projections or bulges 1% as illustratcd are rectangular, which is a desirable, though not essential shape. As illustrated best in Fig. 3 the two projections or bulges 14 of said washers abut flatwise against each other, the slots 13' which are in said projections or bulges being respectively of less area than the depressions or pockets 13. It

.made.

is not always necessary as will be understood that the projections or bulges 141 should be slotted, because as I have already observed,

and as I will hereinafter point out, they might be imperforate or uncut. By abutting them in the manner shown in Fig. 3,

they provide a space between said washers 6 the switching members or same may which can receive pole-pieces of whatever form the be, those denoted by 4 and 5 answering in pro ection 17 shown as having a slot 16'.

In the construction shown in Fig. 5 the outer wall or surface of the pressed out portion or projection 17 is within the boundary of the walls, or it might be wall, of the-depression or pocket 16.

In Fig. 6 I show a washer 18 from which has been pressed the projection 19. This washer has the depression or pocket 20 c0- aXial with the slot 20 in the projection 19. In this particular construction the wall of the slot is inside the outer surface of the projection or bulge 19.

In Fig. 7 the washer 21 has the depression or pocket 22 which produces the projection 23. This projection 23 unlike the other pressed-out projections or bulges, however, is unslotted or uncut.

I have simply described several of the many ways in which the washer can be Its superficial form may be of any desirable character. Although it is illus trated as elongated and virtually elliptical, the preferred shape, this is not always essential, nor is it requisite that the washer should have a plurality of portions pressed or forced therefrom to produce a corresponding number of exterior projections.

I have mentioned the fact that as to one of the forms of the washer the projection thereof is slotted. I use this designation slot as will be understood in a broad sense to cover any kind of an opening or hole in the projection.

What I claim is:

1. The combination of a movable member of conducting material having projecting means, insulating washers slotted to receive the projecting means and having in turn projecting means thereon and which abut against each other, metallic plates hugged between the washers, the first mentioned projecting means being furnished with instrumentalities to hold the parts in assembled relation with said movable member.

2. The combination of a movable member of conduct-ing material having projections, insulating washers slotted to receive the projections, the washers having projections which extend toward and against each other to space the bodies of the washers apart,

metallic members hugged between the spaced apart bodies of the washers, a metallic element carried by the outer ends of the first mentioned projections and secured thereby.

3. .The combination of a member of con-' ducting material having projecting means, insulating washers slotted to receive said projecting means and at least one of them having projecting means extendin toward and against the other washer, metal ic platemeans between the washers, the projecting means of the washer positively preventing the plate-means from coming into contact I 80 with the projecting means of said conducting member. V

In testimony whereof I affix my signature in the presence of two witnesses.

" HENRY vossLER.

Witnesses:

D. H. KIRKPATRICK, Mormon GUE 

